Mining-machine



0;. c. PERRY. MINING. MACHINE. H APPLICATION FILED APR. 21. I920.

Patented Jan. 18,1921.

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.T 0 all whom it may mace/n.

Be it known that l, CLARI-INGE C. Penna, a citizen of the lllnitedtltates, residing at Percy, in. the county of Randolph and ldtate ofIllinois, have invented certain new and useful lin 'iroren'ients inll'lining-lvlachines of which the following; is a specification,

llfly invention relates to irnproveinents in mining machines and moreparticularly to a novel mechanism for rotating and feeding the drillshaft, and a novel, means for assembling the said mechanism.

The primary object ot the invention lies in the provision of a gearmechanism whereby the rotation of the shaft Willbe increased While thefeeding of the shaft reduced, thus improving the drill to the extent ofincreasing its strength, durability, and cl? ficiency.

A further object of the invention lies in the novel means adapted inassembling the mechanism which permits the parts to be readily removedshould they beconiie broken or otherwise inoperative.

Other objects and advantages of the in vention will be apparent duringthe course of the following description.

In the accompanying drawings forming; a

part of this specification and in which like numerals are employed todesignate like parts throughout the same,

Figure l. is a part section and plan VlQW showing in detail the me:lumitun of my niachine;

Fig. '2 is a sectional View taken on. line 2-2 of Fig. 1 showing theconnection oi the driving gear withthe screw shaft;

Fig. 3 is a detail view partly in section showing the removable sleevethrough which the feeding of the shaft is ellmgterl;

Fig. l: is an end view ol the sleeve, and

5 is a fragmentary view showing the means :ior connecting the sleeve andgear,

In the drawings, wherein for the purpose of illustration l: have shown apinto ed enibodiment of my invention, the nuu'leral fl designates aframe o l l-izubstantla reetanoul: r shape having alined apertures s andT at each of ends, the aperture (3 being: of larger diameter than theaperture 7. llxtending inwardly from one side of the frame and formedintegr: l therewith is an arm ll havingan enlarged aperture ll at itstree end Which is in ali'nen'icnt with the apertures ti and 7 of theframe. Projecting laterallv lllweififiafiiw Letter-S Patentjlt atentedJan. to, llltljl hpplicatien filed April 21, 192:0. I

Serial No. fll'ElAGQ.

1.0 which permits the mounting of the frame upon posts in the usualmanner.

A. beveled gear ll has an annular collar 12 which is journaled in thebeau-inn- 6, as clearly shown in Fig. l. The collar of the gear isinteriorly provided with a longitudinal rib or spline 1.3 which fits thelong-itudh'lally extending groove l forined throughout the length of thescrew threaded. shaft or bar 15. This bar 15 extends through. theapertures of the frame and the arm 8 being provided with any number ofthreads per inch as may be desired. A trusto conical shaped sleeve 16having in terlor screw threads 17 is removably secured to the shaft 15,passing through the aperture 9 of the arm 8, The sleeve is provided withdiametrically disposed trunnions 16 projecting from its side. A secondbeveled gear 18 has'annular flanges l9 and 20 projecting from each oiits sides. The gear 18 is connected to the sleeve by the bayonet shapedslots 18 which are adapted to receive the trunnions l6 forming abreakable conncction therebetwecn. 'lhe bore of the flanges is of aconical shape and is adapted to lit tightly over the sleeve ltl, asclearly shown in. Fig. l. The upper flange 20 of he gear wheel 18 isjournaled in the aperture l of the arm ll and projects slightly abovethe arm having its outer periphery provided with screw threads 21. Alocking ring 22 is threaded upon the end of the flange 20 being lockedin its adjusted position by the set screw 23.

The sleeve 16 is more clearly illustrated in Figs. ll" and 1-. andcomprises two sections 2st and 25 which are joined together by theinterlocking apertul'cd lugs 26 having a pivot bolt LT passingthcrcthrough. The section 25 has depending downwardly from its lowerperipheral edge adjacent the jointure oi the two sections, a lug 28 withan aperture E l through its lower extremity.

- Thus it is obvious that upon rotation of the 'handle the gears 11 and18 will be Volved in the same direction, said gear ll rotating the shaftat a greater speed than the gear 18 is feeding the shaft. The gear 11which is provided with the rib or spline 13 causes the rotation of: theshaft, while the gear 18 which is mounted upon the interiorly screwthreaded sleeve 16 causes the screw shaft to be fed forward. If duringthe operation should the parts become worn or broken, the parts may bevery easily removed by the operator. This is effected by first removingthe locking ring 22 from the flange 20 of the gear 18, which will permitslight longitudinal movement of the gear and by loosening the wing nut32 which adjusts the sleeve 16, the thread bar 15 may be removedtherefrom. It is also a known fact that in the operation of machines ofthis character the threads are subject to considerable wearowlng to thestrenuous work to which they are put, and should the threads n thesleeve 16 become useless, a new sleeve; could be easily replaced and theefficiency of the machine retained.

It is to be understood that the form of my invention herewith shown anddescribed is to be taken as a preferred example of the same, and thatcertain changes in the shape, site and arrangement of parts may beresorted to without departing from the spirit of the invention'or thescope of the subjoined claims.

Having thus fully described my invention what I claim is:

1. In a drilling machine thecombination of a frame having alinedbearings at each end, a. lateral extending bearing between saidbearings, a screw shaft passing there- -thr ough, a gear wheel keyed tothe shaft, a

sleeve detaohably threaded to the shaft, a second gear wheel carried bythe sleeve and supported by the lateral bearing, and a double cog wheelmeshing with said gears for imparting movement thereto.

2. In a drilling machine the combination of a frame having alinedbearings at each end, a lateral projecting bearing betwixt saidbearings, a screw shaft passing through the bearings, a gear wheel keyedto said shaft, a sleeve threaded on the shall, said sleeve being formedof two sections hingcdly joined together and held by a. turnbuckle, asecond gear carried by the sleeve, and a double cog wheel for impartingmovement to said gears.

3. In a drilling machine, the combination of a frame having bearings atcach end, a lateral projecting bearing betwixt the ends ofthe frame, ascrew shaft assing through the bearings, a gear wheel keyed to the shaftbelow the top bearing, a removable sleeve threaded on the shaft, asecond gear wheel carried by the sleeve and supported by the lateralprojecting bearing, a short shaft midway the length of the frame anddisposed at a right angle. to the main shaft, a double cog wheel carriedby said shaft and meshing with said gears, and a handle attached to theshaft for imparting movcnn-nt to said cog whecls.

4. In a drilling machine the combination of a frame having bearings ateach end, a lateral extending bearing between said bearings, a screwshaft passing thcrcthrough, a gear wheel keyed to the shaft, a separablesleeve detachably threaded to the shaft, trunnionsextending fromoppositc sides of the sleeve, a second gear wheel carried by the sleeve,said second gear wheel having a plurality of bayonet shaped slots toreceive the said trunnions whereby the gear wheel is removably securedto the sleeve, and :1 double cog wheel n'ieshing with the said gears forimparting movement thereto.

in testimony whereof, I have aliixcd my signature in the n'esence of twowitnesses.

C ARENCE (l. ll lllllY.

Witnesses Gnu. A. LICKISS, H. S. KNAUER.

